#include <reg52.h>
sbit LED=P0^0;
sbit ENLED=P1^4;
sbit ADDRO=P1^0;
sbit ADDR1=P1^1;
sbit ADDR2=P1^2;
sbit ADDR3=P1^3;
main()
{
	ENLED=0;
	ADDRO=0;ADDR1=1;ADDR2=1;ADDR3=1;
	while(1)
	{
		LED=0;
	}
}